"Once Trump takes ownership of the protest, everyone is waiting for his command. They're sitting at home hungry and thirsty,” said an Iran researcher at the Institute for National Security Studies.
Among the officials killed on Friday morning was the spokesman for the Islamic Revolutionary Guard Corps (IRGC).
The victim of the shooting is a 36-year-old police official who was seriously injured on Thursday morning. It is still unclear who was responsible for the attack.
Israeli and US actions against Iran, including strikes on key facilities such as Kharg Island, which hosts a large portion of Iran’s oil exports, have widened the confrontation.
Top US general Dan Caine had announced that American A-10 Thunderbolt II jets had entered the war and were on missions along Iran’s southern flank.
For the biggest US carriers, which do not hedge against oil price rises, the shock is showing up mainly in the fuel bill, with jet fuel prices nearly doubling since the conflict began.
After Hezbollah launched rocket fire into Israeli territory on March 2, Israel responded with a large-scale offensive that again displaced many Shi'ite residents and reignited debate over the group.
Lindsay and Craig Foreman were sentenced to 10 years in prison last year after Iran charged them with espionage, which they deny.
Bahrain, Kuwait, Saudi Arabia, and the UAE all confirmed Iranian attacks on Thursday night and Friday morning.
Chief Executive Mark Samuels said Britain was "one step away" from medicine shortages if instability persisted, with stockpiles providing only a temporary buffer.
The six countries are Iceland, Moldova, Bosnia and Herzegovina, Montenegro, North Macedonia, and Liechtenstein.
