A drone has crashed in NATO member Latvia after entering its airspace from Russia , the Baltic nation's government said. No civilians were injured in the incident, according to a statement issued by Latvia's defense ministry early on Wednesday. Russia has not commented. Riga said a "foreign unmanned aircraft" had crossed over into its airspace from Russia before a "sound similar to an explosion" was heard in Latvia's southeastern Krāslava region. Krāslava sits close to the Latvian border with