France could help defend Israel against an attack from Iran "if in a position to do so", French President Emmanuel Macron said on Friday.

"If Israel were to be attacked in retaliation by Iran, France, if in a position to do so, would take part in protection and defense operations," he said during a press conference.

Iranian air defenses intercepted "projectiles" over the capital Tehran on Friday, state media said, as Israel vowed to keep up pressure after a wave of strikes on military and nuclear sites.

"Enemy projectiles were intercepted by the Tehran air defense," state news agency IRNA said, with another agency, ISNA, reporting that "the air defense systems of Tehran successfully shot down targets".

Several explosions were heard in Tehran and surrounding areas Friday evening, Iranian state media reported, more than 12 hours after a massive wave of Israeli attacks on the country.

"There were reports of explosions heard in the west of Tehran province," in the cities of Shahriar and Malard and around the neighborhood of Chitgar in Tehran city, state news agency IRNA reported, while Mehr agency reported a blast in Pakdasht southeast of the capital.

Israel's military said on Friday it had begun deploying reservists "to all combat arenas throughout the country" after launching a wave of strikes on military and nuclear sites in Iran.

The military said in a statement that it "began to deploy reservists from different units to all combat arenas throughout the country", calling it part of "preparations for defense and offence across all arenas".

World leaders urged restraint on Friday after Israel pounded Iran, striking 100 targets including nuclear and military sites, and killing senior figures.

Here is a roundup of key reactions:

Israel targeted leading members of Iran's armed forces on Friday during its unprecedented onslaught hitting military and nuclear targets across the country.

Here is what we know about some of the top figures killed:

Iran's Revolutionary Guards confirmed that its aerospace commander had been killed with fellow officers in an Israeli air strike on their command center on Friday.

"Commander of the Islamic Revolutionary Guards Corps aerospace force Major General Amirali Hajizadeh... along with a group of brave and dedicated fighters of this force, were martyred" in an Israeli attack on their command center, the Guards said in a statement.

A fresh round of explosions was heard in northwestern Iran on Friday, state television reported, after Israel carried out a wave of strikes on multiple cities.

Israel launched fresh attacks on a key underground uranium enrichment facility in central Iran on Friday, Iranian state media reported.

U.S. President Donald Trump urged Iran on Friday to "make a deal," warning that there will be more "death and destruction" after Israel launched deadly strikes targeting Iranian nuclear facilities.

His comments on his Truth Social platform came after Israel pounded Iran in a series of air raids on Friday, striking 100 targets.

Israel's defense ministry said Friday that Israeli air strikes across Iran had "neutralized" most of the senior leadership of the Iranian Revolutionary Guards' Air Force.

"The defense minister was informed that most of the Revolutionary Guard Air Force leadership was neutralized while convening at their underground headquarters," the ministry said in a statement.