President Trump is working the phones on Monday, holding calls with the leaders of Russia, Ukraine and other European countries as he continues efforts to negotiate an end to the war in Ukraine.

There are lots of unknowns ahead of potential direct talks between Russia and Ukraine in Turkey.

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From foreign policy and tariffs to immigration changes and targeting of DEI, here's a look back at some of the major moves made in the past 100 days of President Trump's second administration.

Ukraine said it would reciprocate any genuine ceasefire by Moscow, but voiced skepticism after Russian President Vladimir Putin announced a temporary Easter truce in Ukraine starting Saturday.

President Trump will speak with Russian President Vladimir Putin on Tuesday, as the U.S. pursues a ceasefire deal in Ukraine.

Ukraine's president said he hopes the U.S. applies "maximum additional sanctions" on Russia if it refuses to accept a 30-day ceasefire, describing the Russian leader's "bravado" as a stalling tactic.

As U.S. envoy Steve Witkoff enters talks in Moscow on a Trump administration proposal for a 30-day ceasefire with Ukraine, an adviser to the Russian president rejected the idea.

Three years after Russia launched its invasion of Ukraine, the U.S., in a split with its European allies over the war, sided with Russia at the U.N.

During a joint press conference President Trump and French President Emmanuel Macron highlighted their friendly relationship, even when they appeared far apart on the war in Ukraine.

Lawmakers sought to dispel Kremlin talking points echoed by the president that Ukraine was responsible for the war with Russia. But they said Trump should be given room to negotiate.

In his second major speech in Europe this week, the vice president will address the Munich Security Conference, just after President Trump said he would start talks with Russia over the war in Ukraine.

Several NATO allies stressed that Ukraine and Europe must not be cut out of any peace talks, as Defense Secretary Pete Hegseth denied that the U.S. is betraying Ukraine.

National Security Adviser Mike Waltz said Fogel was released in what he called "an exchange" with Russia and was on his way back to the United States. Terms of the exchange were unclear.

The war has reached a critical point. A real peace seems unlikely, but a ceasefire is possible, most experts agree. The question is whether it can be achieved without placing Ukraine in further peril.