President Barack Obama faced questions about claims of Russian interference in the U.S. election and about the fall of Aleppo in Syria at his year-end news conference Friday.
Obama took questions from reporters at the White House before leaving for his annual family vacation in Hawaii.
Obama is under pressure to say how the U.S. might be retaliating for Russian hacking that the White House says helped President-elect Donald Trump's campaign and hurt Hillary Clinton's.
The White House and Trump's team have been squabbling over the issue, and Trump has dismissed the U.S. intelligence community's assessment of Russian involvement.
The news conference also comes amid questions about the future of the Syrian opposition after its former stronghold of Aleppo is evacuated.
Here are some of the points mentioned in the news conference as it progressed.
President Barack Obama is criticizing Republicans for warming to Russian President Vladimir Putin, saying, "Ronald Reagan would roll over in his grave."
He says Republicans are falling victim to efforts by Russia to weaken American democracy.
Obama is citing a new survey showing that more than one-third of Republicans view Putin favorability. That's up from just 10 percent in July 2014.
The president is speaking at his annual year-end press conference. Much of his appearance has been dedicated to discussing Russia's involvement in hacks of the Democratic National Committee and a top Clinton campaign staffer.
President Barack Obama briefly paused his year-end news conference after an unidentified woman began to feel ill and medical help arrived.
Obama sought help getting his doctor to come to the White House briefing room, where he was answering questions from reporters. At another point, he started telling people what doors to go through to get to the doctor's office.
Journalists and photographers - many of them dressed for the frigid weather - packed the rather small briefing room for Obama's final news conference of the year, rendering it stuffy and uncomfortable.
Reporters without assigned seats stood in the aisles, which is where the woman was when she began to feel ill.
Obama is accustomed to people passing out at his events around the country - just not in the White House briefing room.
President Barack Obama says the U.S. would've had to be "all in and willing to take over Syria" for him to intervene more forcefully in the country's civil war.
He says doing so wasn't feasible for many reasons. It would've required many U.S. troops; he lacked support from Congress and the right under international law; the U.S. already had costly deployments in Iraq and Afghanistan; Syria's opposition wasn't prepared to govern; and Russia and Iran were protecting Syria's government.
Obama says military options short of invasion were tempting because "we wanted to do something." But it was "impossible to do this on the cheap."
Obama says he asked himself if he could do something to save lives.
But he says his No. 1 priority was doing what was right for America.
President Barack Obama says he's offered incoming President Donald Trump some "pretty specific suggestions" about safeguarding the integrity of the office and other institutions.
Obama made the revelation during his year-end news conference at the White House. He offered no specifics about what the suggestions were.
Obama says Trump "has listened" to him. But he says he can't say with certainty whether Trump will follow his advice.
The president and Trump have spoken by telephone several times since they met in the Oval Office two days after election, and it's usually Trump who reveals that they've talked.
Obama says their telephone conversations are "cordial" and not "defensive in any way," given their deep disagreements on the issues.
President Barack Obama says he regrets not being able to transfer his own political success into Democratic races across the country.
The president is acknowledging the failures of his party - and himself - to build up a broad base of support during his tenure. He says the party must do a better job of reaching out to all voters, even in states and counties they are unlikely to win.
Obama says: "That's something I would have liked to have done more of but it's kind of hard to do when you're dealing with a whole bunch of issues here in the White House."
Democrats have lost more than 1,000 seats in Congress, state legislatures and governor's mansions during Obama's two-term.
President Barack Obama says everyone should be concerned about the level of cyber hacking that renders governments, businesses and individuals vulnerable.
Speaking at his year-end news conference at the White House, Obama says Russian hacking during the election was not "some elaborate, complicated espionage scheme."
He says the unsophisticated nature of what transpired concerns him and "it should concern all of us."
Obama says the episode underscores the "constant challenge" the nation faces with hacking that happens every day.
Obama commented on intelligence and law enforcement assessments that Russia intervened to try to help Donald Trump win the presidential election.
President Barack Obama is defending how he's handled the hacking of political sites that took place before the November election.
He says at a White House news conference that his goal is to send a clear message to Russia that such intrusions won't be tolerated. But he's not saying what the U.S. response will be.
Obama says with the "hyperpartisan atmosphere" of the election, his main concern was the integrity of the election process. He says he wanted to make sure the U.S. public understood that the White House was trying to "play this thing straight."
He says he spoke with Russian President Vladimir Putin in September, and told him - in these words - to "cut it out."
The White House hasn't commented about what a U.S. response might entail. Options could include a retaliatory cyberstrike on Russian networks or sanctions targeting Putin's associates.
President Barack Obama says Syria, Russia and Iran have blood on their hands for what's happened in the Syrian city of Aleppo.
Obama says the world is "united in horror" at the assault on rebel-held areas of Aleppo.
Obama - at a White House news conference - is accusing the Syrian government and its two powerful allies of deliberately "surrounding, besieging and starving innocent civilians," and targeting aid workers and medical personnel. He says entire neighborhoods have been reduced to "rubble and dust."
The president also says civilians have been executed.
Obama acknowledges that Syria's almost 6-year civil war has been among the hardest issues he's faced. Despite his failure to stop the conflict, Obama isn't saying anything to suggest a change in U.S. strategy.
President Barack Obama is using his year-end news conference to boast about his administration's achievements.
Obama is citing a number of positive economic indicators such as a declining unemployment rate and higher rates of insured people under his health overhaul. And he's highlighting diplomatic achievements - among them, the reopening of relations with Cuba.
Obama says he's leaving the country "stronger and more prosperous than it was when we started." But he's reminding the public that there's more to be done on the country's biggest problems. He says he's going to continue working to push the agenda of his administration after leaving office.