The US-Iran conflict has entered another volatile phase as President Donald Trump vowed that American strikes on Iran would continue “until I say enough”, while Washington reinstated its maritime blockade on Iranian ports despite dropping a controversial shipping fee proposal for vessels using the Strait of Hormuz.

US-Iran war LIVE: Iran activated its air defence systems in Tehran and the nearby city of Pakdasht as reports of fresh explosions emerged from several parts of the country. Iran's IRGC claimed attacks the US-operated Ali Al Salem Air Base in Kuwait.

The United States and Iran traded attacks Tuesday night and into Wednesday morning as their war over the Strait of Hormuz continued to spiral.

Iran’s Revolutionary Guards say their latest attacks are retaliation for US actions, vow to keep the Strait of Hormuz closed, claim to have struck a US logistics centre in Kuwait, and warn that other oil and gas export routes linked to the US and its allies could also be shut.

Tehran’s Islamic Revolutionary Guard Corps threatened to keep the Strait of Hormuz shut and close “all other export corridors that benefit the US and its allies” — as the renewed American blockade intercepted two ships from Iran’s ports.

Iran-US conflict escalates as the US resumes military strikes and naval blockade on Iran, imposing a 20% fee for shipping through the Strait of Hormuz. Iran vows retaliation amid rising oil prices and regional tensions.

"The days are over when someone strikes us and we don't hit back with a decisive blow," said Israeli Prime Minsiter Benjamin Netanyahu.

By Elwely Elwelly, Eman Abouhassira and Tala Ramadan DUBAI/WASHINGTON, July 13 (Reuters) - U.S. and Iranian forces exchanged heavy missile and drone attacks over the weekend and into Monday, with Tehran saying it had struck U.