Iran conducted exercises featuring a wide array of domestically produced drones, days after the anniversary of the US killing of a top Iranian general by a drone strike in Iraq.

Iran and the regional forces it backs have increasingly relied in recent years on drones in Yemen, Syria, Iraq and the Strait of Hormuz at the mouth of the Gulf. Iran’s armed forces tested combat drones used as bombers, interceptors and in reconnaissance missions in the two-day exercises in central Semnan province, the semiofficial Fars news agency said.

“The fingers of our heroic armed forces are on the trigger, and if enemies commit the slightest mistake, the armed forces will surely respond fiercely,” said Mohammad Baqeri, Chief of Staff of the Armed Forces, quoted by state media.

Foreign Minister Mohammad Javad Zarif said that (former) US President Donald Trump may be trying to find an excuse to attack Iran or Israel might try to provoke a war. Israel rejected the allegation.

The exercises coincided with increased tensions between Iran and the United States two weeks before President-elect Joe Biden takes office. Biden aims to revive a nuclear agreement with Iran abandoned by Trump, though diplomacy is expected to be tricky.

Beyond surveillance, Iranian drones can drop munitions and also carry out a “kamikaze” flight when loaded with explosives and flown into a target, according to a US official who spoke to Reuters.

Iran has developed a large domestic arms industry in the face of international sanctions and embargoes barring it from importing many weapons. Western military analysts say Iran sometimes exaggerates its weapons capabilities, though concerns about its ballistic missiles contributed to Washington leaving the nuclear pact.