How extensive is Russia’s military aid to Iran?

“A bit” is what United States President Donald Trump thinks about the scale of Russia’s military aid to Iran.

Moscow “might be helping them a bit”, he told Fox News on March 13.

A day later, Iran’s Foreign Minister Abbas Araghchi stated laconically that Moscow’s military cooperation with Tehran was “good”.

His words seemed to confirm earlier media reports that Russia is providing Ira...