Police said an object crashed and exploded in Polish territory following a night of long-range attacks by Russia across Ukraine.

Russia hit several of Ukraine's key cities overnight, with one strike killing three children and their parents.

Escalating Russian strikes have renewed concerns that airspace violations could lead to confrontations with NATO members.

Russian missiles have briefly entered Polish airspace in the past. Investigators have yet to definitively identify the object that struck overnight. By Lara Jakes and Constant Méheut Lara Jakes covers ...

Lithuania's president says intelligence suggests Russia is planning attacks on critical infrastructure in the Baltic states or Poland.

Add Yahoo as a preferred source to see more of our stories on Google. LONDON -- The incursion of a significant number of Russian drones into Poland is a dramatic and unsettling escalation of the war ...