Michele Kelemen

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Ukrainian President Petro Poroshenko met with President Trump at the White House on Tuesday, in what Poroshenko had earlier described as part of a "substantial visit" and the White House called a "drop-in."

Ukraine is concerned about what the Trump administration's efforts to improve relations with Russia might mean for its own relationship with Washington.

The White House didn't exactly roll out the red carpet for the Ukrainian leader — he dropped in to the Oval Office to see Trump following a meeting with Vice President Pence.

After Otto Warmbier, detained for more than a year in North Korea, returned home this week in a coma, the Trump administration is looking into ways to stop other Americans from going there.

The State Department currently warns Americans against travel to that country, but Secretary of State Rex Tillerson has signaled he may go further.

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Secretary of State Rex Tillerson says he wants flexibility as he tries to improve ties with Russia. U.S. lawmakers, however, are going in another direction.

The Senate has overwhelmingly passed a bill to impose new sanctions on Russia and to make sure the Trump administration doesn't change course without congressional buy-in.

A bipartisan group of senators has taken a step to limit the Trump administration's ability to ease sanctions on Russia, adding an amendment to a widely supported Iran sanctions bill to make sure Congress has a say in future Russia policy. The Senate is considering the bill this week.

As Secretary of State Rex Tillerson tries to heal a deep rift among Arab partners, President Trump seems to be upping the ante. Trump says he consulted with Saudi Arabia and others on a recent trip to Riyadh and decided to call out Qatar for its "very high level" of terror financing.

President Trump's Twitter account may be popular among his fans at home, but his latest missives are complicating the work of American diplomats overseas. As some diplomats push back, State Department spokeswoman Heather Nauert cautions that they "are expected to use their judgment."

Consider Trump's personal attack on London's mayor, Sadiq Khan, after Saturday night's deadly terrorist attack in the British capital.

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President Trump took to Twitter on Monday to complain about Democratic "OBSTRUCTIONISTS," blaming the Senate for being slow to approve his nominees, including his ambassadors.

A spokesman for the ranking Democrat on the Senate Foreign Relations Committee threw it right back, saying Trump should be spending less time on Twitter and more time actually filling those positions.

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Conflicts across the Middle East and North Africa are putting over 24 million children at risk, according to alarming new research by the U.N. Children's Fund.

"Beyond the bombs, bullets and explosions, countless children are dying in silence from diseases that could easily be prevented and treated," says Geert Cappelaere, UNICEF Regional Director for the Middle East and North Africa.

His staff put together some staggering statistics.

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