整理：俄乌冲突最新24小时局势跟踪（6月14日）

Conflict Situation - Ukrainian President Zelensky stated that Ukrainian forces are gradually pushing Russian troops back in the Sumy region [1] - Ukrainian media reported that a Russian Su-25 aircraft crashed in Donetsk, possibly shot down by friendly fire [1] - The Russian Defense Ministry claimed that its air defense forces destroyed 125 Ukrainian drones overnight across the country [1] Negotiation Status - Russia has expressed readiness to conduct daily prisoner exchanges with Ukrainian forces [1] Additional Context - European Commission President Ursula von der Leyen announced that the total support from the EU to Ukraine has approached €150 billion since Russia's full-scale invasion [2] - The Polish military reported intercepting a Russian reconnaissance aircraft that violated its airspace, with no response from Russia [2] - The Russian government reported testing promising laser systems to counter drones [2]