Today's discovery of drone fragments on a Romanian farm near the Ukrainian border would not be the first time Russia's invasion has strayed outside Ukraine's borders.
It's not yet clear whether the drone came from Ukraine, but there have been numerous instances in the past of airborne objects falling in neighbouring countries.
Perhaps the most concerning was when a missile fell in Poland in 2022, killing two men in a small farming community.
NATO scrambled to hold an emergency meeting in the aftermath, as Poland is a member of the Western military alliance.
It was later established the missile was one from Ukraine's air defence that had gone astray.
Officials from Poland, NATO and the US said they still thought Russia was to blame for the deaths because the Ukrainian missile would not have needed to be used had it not been forced to defend itself against Moscow's invasion.
Last Sunday, Poland demanded an explanation from Russia after one of its missiles strayed briefly into Polish airspace, forcing Warsaw to activate F-16 fighter jets.
A similar incident happened overnight during a Russian missile strike on western Ukraine, which again saw Polish fighter jets scrambled.
Back in December 2023, Poland's defence forces said an unknown object had entered the country's airspace from the direction of Ukraine and then vanished off the radars.
Poland said the object, which travelled 24 miles into its airspace and was there for three minutes, appeared to be a Russian missile.
Romania has also seen numerous instances of objects from the war crossing its borders.
Another drone crashed on its territory in December 2023 during an attack on a Ukrainian port.
Authorities found a 1.5m deep crater in an uninhabited area of eastern Romania.
A separate incident in September saw a drone found on Romanian territory near the Danube river.
Soon after, fellow NATO member Bulgaria reported finding a kamikaze drone on its territory but could not confirm its origins.