Iranian Foreign Ministry Spokesman Bahram Qassemi made the remarks early on Monday in response to the final communique of Arab League's 29th summit.
The summit begins on Sunday in the East coast city of Dammam.
The rift between Qatar, Saudi Arabia, the UAE and Bahrain will not be on the summit's agenda.
King Salman said Saudi Arabia was donating $200-million to support the Palestinians, including $50-million for the U.N. Relief and Works Agency (UNRWA).
Missiles targeted a research centre, two chemical weapons facilities and an Assad regime command centre.
"East Jerusalem is an integral part of Palestinian territories", he stressed before the gatherers from across the Arab world.
Saudi Arabia's King Salman will chair Sunday's summit in the eastern city of Dhahran, home to Saudi Arabia's oil giant Aramco and 160 kilometres (100 miles) across the Gulf from Iran.
The Arab leaders are also expected to renew their support for the legitimate government of Yemen and back all measures by the internationally recognised government of Yemeni President Abed Rabbo Mansour Hadi to restore stability in the country and end the coup by the Iran-backed Houthis. Doha denies the charges and says the boycott is an attempt to impinge on its sovereignty.
The summit reviewed trade and investment matters, the Arab strategy to meet water challenges, the second phase of the Arab emergency food security programme and the Arab agreement for the exchange of information on plant and heritage resources. Qatari Emir Sheikh Tamim bin Hamad al-Thani headed Qatar's delegation at last year's summit in Jordan.
"Tehran's principled policy has always been based on maintaining more convergence and mutual respect for the sovereignty of other countries, especially the neighbours, and the observance of good neighbourliness".
Sheikh Tamim returned to Doha on Saturday from a US trip where he met Trump.
Topping the agenda will be the Palestinian issue, according to Saudi Foreign Minister Adel Al-Jubeir.
"It's not a big problem", he said.
Ahead of the summit, the four boycotting nations said their demands - including closing the Al Jazeera television station and reducing ties with Iran - were "a necessary basis" for a resolution to the crisis with Qatar.
There are 22 members of the Arab League but Syria's membership has been suspended since 2011 because of the civil war.