President Volodymyr Zelenskyy says Ukrainian military personnel shot down Iranian-designed Shahed drones in multiple Middle Eastern countries during the Iran war, describing the operations as part of a broader effort to help partners counter the same weapons used by Russia in Ukraine.

Easter festivities are muted in Kharkiv as Ukrainians expect fighting to flare up again after a weekend truce.

Studies from the Ukraine war show drone-delivered explosives lead to a wider range and higher severity of traumatic injury.

Ukraine launched more cross-border attack drones than Russia in a one-month period for the first time since the start of the ongoing war in 2022, according to daily data published by the Ukrainian Air Force and Russian Ministry of Defense, which was analyzed by ABC News.

Ukraine-Russia war latest: Putin and Zelensky agree to Easter ceasefire while Moscow loses 1,100 troops in a day - Kyiv and Moscow decide not to trade attacks from tomorrow evening to Sunday midnight

By Michael Kahn, Supantha Mukherjee and Tom Balmforth PRAGUE/STOCKHOLM/LONDON, April 7 (Reuters) - Specialist mini jet engine makers across Europe are ramping up production and investment to head off a looming supply shortage that threatens to hold back Ukraine's rapid deep-strike drone programme at a critical stage of the war with Russia.