Ukraine's defense ministry said that its long-range Storm Shadow missiles, donated by the UK, have hit all Russian targets identified.
This comes after, earlier this month, Defence Secretary Ben Wallace confirmed the UK would be the first country to donate the missiles to Ukraine.
"Storm Shadow long-range missiles have hit 100% of the targets identified by the General Staff," the ministry tweeted on Sunday, attributing the military intelligence to Ukraine's Defense Minister Oleksii Reznikov.
Storm Shadow is a 'fire and forget' missile that is programmed before the mission and, with a maximum speed of 621mph, can hit targets up to 350 miles away.
This announcement comes as Ukraine's military is expected to launch its counter-offensive operations against the Russian invasion.