Biden was asked on Wednesday whether he would support strikes against Iranian nuclear sites and the US president told reporters: "The answer is no."
Ayatollah Ali Khamenei's address in Tehran followed Iran's second-ever direct attack on Israel. It was also the first since exchanges of fire between Tehran-backed Hezbollah fighters and Israeli troops escalated into full-blown war in Lebanon.
Biden added that the Israelis "have not concluded how they're, what they're going to do" in retaliation for a huge ballistic missile attack by Iran on Israel on Tuesday.
As Israel weighs its options after its arch-foe Iran launched its largest ever assault on Tuesday, Biden was asked whether he would support Israel striking Iran's oil facilities.
All sides are aware that any retaliatory strike against Iran's nuclear or oil installations would send the Middle East spiralling even more towards chaos, but Israel seems not to have made a decision yet.
"Our action is concluded unless the Israeli regime decides to invite further retaliation," Iranian foreign minister said in a post on X early on Wednesday.
Iran rejected accusations that it is trying to kill Trump earlier this summer, shortly after a gunman opened fire at a rally in Pennsylvania, killing one person and wounding the presidential candidate.
One of the security officials said a large-scale operation is underway by the IRGC to inspect all devices, not just communication equipment. He said most of these devices were either homemade or imported from China and Russia.
Nasrallah and Hezbollah have thrived with an image of invincibility after confronting Israel in 2006.
Critics of the upcoming accord have pointed out that Iran will not play by the rules and may continue a covert programme for uranium enrichment outside designated nuclear facilities covered under the agreement.
Bridging the gap between Iran and the West would help soften Iran's present voice against Israel through a possible political and social transformation in favour of the West.
The only thing to lament about the agreement reached by Iran and the P5+1 (the UN Security Council's five permanent members – China, Britain, France, Russia, and the United States – plus Germany) in Vienna this month is that it was not signed and sealed a decade ago.
The US Congress has 60 days to review the agreement. During that time, President Obama cannot lift the sanctions.
After the marathon 18-day Vienna talks a historic deal was signed on Tuesday between Iran and six global powers -- the US, Russia, China, Britain, France and Germany.
A deal on limiting Iran's nuclear programme in return for the lifting of sanctions has been reached at talks in Vienna, diplomats say.
World powers race to clinch a landmark deal to prevent Iran acquiring a nuclear bomb, with a source close to the marathon talks saying an agreement was "98-percent" completed.
The weather is sultry and tempers are fraying during tense negotiations over Iran's nuclear programme - one particularly testy exchange sparked a rash of social media messages and memes.
Not long after staging a cartoon contest satirizing the Holocaust, a group in Iran launched another event — this time, aimed at the Islamic State extremist group.
Seventy Afghan and Iraqi migrants have been rescued from a packed boat off the southeastern coast of Italy and brought to shore on Sunday