Business Insider:

Russia launched more than 300 Iranian-made drones at Ukraine throughout May, in an attempt to get the country to use up its stockpile of advanced air defense missiles, but the efforts didn’t work, according to UK intelligence.

In an intelligence update on Monday, the UK Ministry of Defence labeled the campaign Russia’s “most intense use” of Iranian Shahed uncrewed aerial vehicles to date, and said Russia was likely firing the drones in “an attempt to force Ukraine to fire stocks of valuable, advanced air defence missiles.”

Click here to read more