Iranian state media has threatened to strike military bases and ships belonging to the UK, US and France if those countries help Israel defend against retaliatory missile strikes, declaring there would be 'grave and far-reaching consequences' if these countries were 'supporters' of Israel in this conflict.

Israeli Prime Minister Benjamin Netanyahu said Sunday that Iran would pay “a very heavy price” for killing Israeli civilians, as the two foes kept up intense fighting.

Iran warns of an "unprecedented" retaliation if Israel attacks, while President Trump describes the Middle East as a "dangerous place."

Tensions in the world are rising as Iran has made a threat against the UK following missile strikes against Israel, let's hope it's not WW3

Friday’s attacks constituted a significant escalation between Israel and Iran — raising fears of a full-on regional conflict likely to embroil the U.S.

Israel's ongoing airstrikes and intelligence operation and Iran's retaliation raised fears of all-out war between the countries and propelled the region, already on edge, into even greater upheaval.

Iran has limited options to respond directly. The danger, however, is that Israel has opened a Pandora’s box: the worst Iranian response might also be the most likely—a decision to withdraw from its arms control commitments and build nuclear weapons in earnest.

Whether Netanyahu wants to end Iran’s nuclear program or replace its regime, they’re both risky propositions with little chance of success.