Ukrainian President Volodymyr Zelenskiy resumed talks with U.S. President Donald Trump's envoys in Berlin on Monday, after the U.S. side said a lot of progress had been made on ending Europe's deadliest conflict since World War Two.

When Russia launched its full-scale invasion on Feb. 24, 2022, Ukraine cut diplomatic relations with Moscow, formally severing the main line of communication. Yet, as the war enters its fourth year, discreet communication between Ukraine and Russia has continued — through humanitarian contacts,

Ukrainian President Volodymyr Zelenskyy said that Ukrainian, U.S. and European officials will hold a series of meetings.

Five hours of talks between Russian President Vladimir Putin and top United States negotiators did not yield a breakthrough compromise on a possible Ukraine peace deal, a Kremlin aide said early Wednesday.

Explore the complexities of Ukraine's ongoing conflict and the challenges of achieving peace amid shifting geopolitical dynamics.

By Ben Aris in Berlin Ukrainian President Volodymyr Zelenskiy was in Berlin on December 14 to meet top EU leaders and appears to be trying to stitch together a string of bi-lateral security deals that would allow him to conclude a peace deal with Moscow.