US Secretary of State Marco Rubio said he expressed "disappointment and frustration" to his Russian counterpart over the lack of progress on resolving the Ukraine war.
"I echoed what the president (Donald Trump) said, both a disappointment and frustration at the lack of progress," Rubio told reporters on Thursday after the meeting with Sergey Lavrov on the sidelines of the ASEAN gathering in Malaysia.
It was their second in-person meeting, at a time when Trump has grown increasingly frustrated with Russian President Vladimir Putin as the war in Ukraine drags on.
Russian drones and missiles bore down on the Ukrainian capital on Thursday, as escalating Russian attacks have strained Ukrainian air defences, forcing thousands into bomb shelters overnight.
Ukrainian President Volodymyr Zelenskyy said Russia had launched 18 missiles and around 400 drones in an attack that primarily targeted the capital Kiev.
Steep sanctions
There was no comment from Moscow, which the previous night launched a record 728 drones at its neighbour.
On Tuesday, a day after ordering a resumption of deliveries of US defensive weapons to Ukraine, Trump was unusually critical, saying Putin's statements on moving towards peace were "meaningless".
Trump has also said he is considering supporting a bill that would impose steep sanctions on Russia, including 500 percent tariffs on nations that buy Russian oil, gas, uranium or other exports.
Rubio and Lavrov first met in Saudi Arabia in February as part of Trump's effort to re-establish relations and help negotiate an end to the war.
The Kremlin said on Wednesday it was relaxed about Trump's criticism and would keep trying to fix "broken" relations with Washington.
At a conference of Ukraine-friendly nations in Rome on Wednesday, Trump's Ukraine envoy Keith Kellogg met with Zelenskyy.
