Israel's defence minister accused Iran on Sunday of providing foreign militias with drone training at an airbase near the city of Isfahan, a month after Tehran came under global scrutiny over a suspected drone attack on an Israeli-managed tanker off Oman.

Axar.az reports citing foreign media that Israel has combined military strikes with diplomatic pressure to beat back what it describes as an effort by its arch-foe, whose nuclear negotiations with the West are deadlocked, to beef up regional clout through allied guerrillas.

In what his office described as a new disclosure, Defence Minister Benny Gantz said Iran was using Kashan airbase north of Isfahan to train "terror operatives from Yemen, Iraq, Syria and Lebanon in flying Iranian-made UAVs (unmanned aerial vehicles)".

Iran was also trying to "transfer know-how that would allow the manufacturing of UAVs in the Gaza Strip," on Israel's southern border, Gantz told a conference at Reichman University near Tel Aviv.

His office provided what it said were satellite images showing UAVs on the runways at Kashan. There was no immediate comment from Iran.