A deal is taking shape for the U.S. and Ukraine to jointly develop and build weapons that have been at the forefront of the wars in both Ukraine and Iran.

About 20,500 children unlawfully deported or forcibly transferred to Russia or Russian-held territory; alert sirens sound in Kyiv. What we know on day 1,539

A U.S.-brokered ceasefire between Russia and Ukraine was due to expire Monday with both sides accusing each other of breaching the 72-hour arrangement, as American and European officials considered how they might steer the warring countries into further talks.

Robin Radar is helping US allies combat Iran's Shahed drones and said its experience against Russia's drones has been key.

Britain’s Build With Ukraine project has produced thousands of Octopus-100 interceptor drones with Ukrainian help in the UK. Some of the drones are shipped to Ukraine as military aid. The Ukrainian company Praktika was contracted last November to produce armoured vehicles with Spanish companies in Spain.

Ukraine-Russia war latest: Alarm raised as two drones crash in Nato country after crossing from Russia - Russian foreign ministry urges countries with diplomatic missions in Kyiv to treat warning seri

Russian attacks killed more than 20 people across Ukraine on Tuesday, including 12 in one of the deadliest strikes this year, hours before the midnight start of an open-ended ceasefire proposed by Kyiv.

Russian drone and missile strikes targeting Ukraine’s power grid during the night killed at least five people and wounded 39 others, Ukrainian authorities said Tuesday, less than a day before Kyiv said it would enact a ceasefire and three days before Moscow promised its own truce.