U.S. Attorney General Merrick Garland and Ukrainian Prosecutor General Andriy Kostin discussed efforts to hold those responsible for war crimes in Ukraine accountable.
Garland said to aid the effort, the U.S. will send a representative to work as a legal advisor to the U.S. Embassy in Kyiv as well as a prosecutor to the Hague.
Meanwhile, Russian President Vladimir Putin met with China's Defense Minister Li Shangfu on Sunday, marking the latest high-profile meeting between Russian and Chinese officials in recent months.
Putin hailed the deepening military cooperation between Moscow and Beijing, saying recent joint military exercises had strengthened "the extremely trusting, strategic nature of our relations."
The meeting between top Russian and Chinese officials will fuel further speculation that the countries are pursuing deeper military cooperation as the war in Ukraine continues and relations with the West deteriorate. Both countries previously hailed a "no limits" partnership.
There's also been an international outcry after Kremlin critic Vladimir Kara-Murza was jailed for 25 years by a Moscow court on Monday after it found him guilty of treason and other offenses he denied.
The U.S., U.K. and Germany condemned the sentence, with London calling the conviction of Kara-Murza, a British dual national, "politically motivated."