Iran has urged Islamic and Arab countries to unify against Israel as the war between Israel and Palestine rages.

Tehran, which financially and militarily supports Hamas, has come under increased scrutiny since the Islamist group's members burst into Israel's southern border over the weekend, killing people in their homes and on the streets in an onslaught that claimed more than 1,200 lives.

PHOTO | COURTESY  Iranian President Ebrahim Raisi 

Iran has stated that it was not engaged in the strike but has hailed it as a "success."

As Israel responded to the devastating assault by hitting Hamas targets in Gaza, where 1,354 people were murdered, Iranian President Ebrahim Raisi encouraged his Syrian counterpart Bashar al-Assad to cooperate against Israel in a phone call.

"All the Islamic and Arab countries... must reach serious convergence and cooperation on the path of stopping the crimes of the Zionist regime against the oppressed Palestinian nation," Raisi stated in a conference call with reporters on Wednesday.

PHOTO | COURTESY Gaza bombarded

 According to the Iranian presidency website, Raisi is accusing Israel of "genocide against Palestinians and that Iran will coordinate with Islamic countries as soon as possible.

Tehran has offered to hold an emergency meeting of the Organisation of Islamic Cooperation (OIC), which has 57 member countries.

PHOTO | COURTESY  Gaza bombarded

US Vice President Joe Biden advised Iran to "be careful" not to stoke the regional crisis.

On Tuesday, Iran's supreme leader, Ayatollah Ali Khamenei, who has the final say on important state issues, rejected any Iranian involvement in the incident while reiterating the country's support for Palestinians.

Raisi called Israel's bombing of Gaza sites on Thursday as a failure that occurs only because Israel "cannot defeat the Palestinian youth and fighters."

The Iranian president has also spoken with Saudi Crown Prince Mohammed bin Salman on the phone.