The Kremlin was silent Tuesday morning as Ukraine's ultimatum for a full and unconditional ceasefire passed its deadline.On May 10, Ukraine and its European allies called on Russian President Vladimir Putin to agree to a 30-day ceasefire by Monday or face a new wave of sanctions.

Ukrainian officials say Russia launched more than 100 drones, rejecting calls for a ceasefire as Zelenskyy says he'll "be waiting for Putin" to join him for direct talks in Turkey.

"We are waiting for (Russian President Vladimir) Putin's agreement and we agree that if there is no real progress this week, we want to work together at European level for a significant tightening of sanctions," Merz said at a news conference with his Greek counterpart.

During the war in Ukraine, Russian forces began using motorcycles and ATVs adapted with trailers and improvised carts to transport ammunition, supplies, and even to evacuate wounded soldiers.

The supply of military aid to Ukraine from Italy is delayed. However, there is hope that it will arrive once the war with Russia is over, states Italy's Minister of Defense Guido Crosetto, according to La Repubblica.

WASHINGTON/RIYADH/ANTALYA (Reuters) - U.S. President Donald Trump's senior envoys Steve Witkoff and Keith Kellogg will travel to Istanbul for potential talks on Thursday on how to end Russia's war in Ukraine, three sources familiar with the plans said on Tuesday.

A Ukrainian military spokesperson said the deployment signals that Russian forces are facing some trouble in Chasiv Yar.

Russia has spent most of its National Wealth Fund in the past few years, with liquid funds potentially being depleted in 2025, one economist says.