Ukraine war live updates: Russia set to bolster its air defenses near Finland in response to NATO accession; U.S. is investigating intelligence leak

The U.K. Ministry of Defence believes Russia has increased its assaults on the town of Marinka in Ukraine’s eastern Donetsk Oblast, some 13 miles from Donetsk city.

The town has been fought over since 2014 and largely destroyed as a result, the ministry wrote in its daily intelligence update on Twitter. Still, Russian forces appear to be deploying…