Iran "considers crossing the red lines in Lebanon and Gaza to mean direct war."
President Donald Trump announced "major combat operations" against Iran on Feb. 28, with massive joint U.S.-Israeli strikes targeting military, government and infrastructure sites.
Following the announcement of a two-week ceasefire, initial U.S.-Iran talks in Pakistan in April failed to reach a peace deal.
Trump later announced the open-ended extension of the ceasefire and the continuation of a U.S. blockade until negotiations are concluded "one way or the other."
The Islamic Revolutionary Guard Corps said Iran "considers crossing the red lines in Lebanon and Gaza to mean direct war and the imposition of costs on its own national security and Islamic resistance."
In response, the IRGC said, Iran "resolves to carry out defensive operations by taking meaning-breaking actions, opening new fronts, and in addition, maintaining the Strait of Hormuz equation."
The Israeli military has warned residents of the southern suburbs of Beirut, Lebanon, to flee their homes amid potential impending strikes.
The Israeli military said it will target locations in the suburb of Dahiyeh if Hezbollah “continues launching rockets towards Israeli cities and towns.”
Israeli Prime Minister Benjamin Netanyahu earlier instructed the military to strike “terrorist targets" in Dahiyeh.
-ABC News’ Jordana Miller
Iran is stopping "dialogue and exchange of texts through mediation” due to Israel’s strikes on Lebanon, Iran’s semi-official news agency, Tasnim, reported.
Iran is also blocking the Strait of Hormuz, Tasnim reported.
CENTCOM said it intercepted two Iranian missiles targeting U.S. troops in Kuwait on Sunday night.
“These missiles were immediately defeated and no American personnel were harmed,” CENTCOM said.
-ABC News’ Steven Beynon
