Iran's supreme leader Ayatollah Ali Khamenei on Saturday warned those involved in popular Arab uprisings against trusting Western powers and their "promises," saying they should instead confide in Islam for solutions.

"Never trust America, NATO, and criminal regimes like Britain, France and Italy -- who for a long time divided your lands (among themselves) and plundered them," Khamenei said as he opened a two-day conference in Tehran on "Islamic Awakening" attended by several hundred guests from Arab countries.

Top Russian and U.S. diplomats have discussed their differing positions surrounding a Palestinian bid for recognition as a state at the United Nations, the foreign ministry said on Saturday.

U.S. Secretary of State Hillary Clinton on Friday phoned her Russian counterpart Sergei Lavrov to discuss "certain issues of the Middle East situation," including a Palestinian bid to win U.N. statehood, the Russian foreign ministry said in a statement.

The Nigerien government said Friday it will not send fallen Libyan leader Moammar Gadhafi’s son Saadi back home from Niger, where he fled after the collapse of the regime in Tripoli.

Asked by journalists if Niger would turn Gadhafi’s son over to Libya's new authorities, government spokesman Marou Amadou said, "No."

Fighters loyal to Libya's new leaders on Friday thrust deep into the city of Sirte and into desert oasis Bani Walid, two of fugitive Moammar Gadhafi’s few remaining bastions, Agence France Presse reporters said.

On the political front, officials in Tripoli said a new transitional government would be announced on Sunday, while the U.N. General Assembly gave Libya's U.N. seat to the former rebel National Transitional Council.

Bahraini security forces fired tear gas, rubber bullets and stun grenades Friday to disperse thousands of mourners at the funeral of a man who died after he himself was tear-gassed, a Shiite politician said.

"Security forces used tear gas, rubber bullets and stun grenades to disperse the demonstrators while the majority of them were trying to leave at the end of the funeral," said Matar Matar, a senior member of Al-Wefaq, Bahrain's largest Shiite opposition formation.

The international Red Cross on Friday condemned attacks on medical services in Syria, saying that relief workers and ambulances have come under fire on several occasions in the country.

"It is completely unacceptable that volunteers who are helping to save other people's lives end up losing their own," said Beatrice Megevand-Roggo, the International Committee of the Red Cross' head of operations for the Near and Middle East.

Palestinian President Mahmoud Abbas vowed Friday to lodge a bid for U.N. membership before the Security Council in one week, despite mounting Israeli and U.S. opposition.

"We are going to the Security Council," he said in a televised address to the Palestinian people from his Ramallah headquarters.

Iraq's leaders, including the president and prime minister, have repeatedly called on Iran to release two U.S. hikers convicted by Tehran for spying, Foreign Minister Hoshyar Zebari told Agence France Presse on Friday.

"We passed messages to the Iranians at all levels, from the president himself to the prime minister to the foreign minister," Zebari said, referring to President Jalal Talabani and Prime Minister Nouri al-Maliki.

Syria has filed a “strong formal protest memorandum” with the Arab League over Wednesday’s meeting between its Secretary General Nabil al-Arabi and “figures claiming to represent the Syrian opposition,” Syria’s official news agency SANA said Friday.

The opposition figures “handed al-Arabi a list of demands calling for all forms of flagrant foreign interference, including military intervention,” SANA said.

Turkish Prime Minister Recep Tayyip Erdogan lashed out at Syrian President Bashar al-Assad on Friday, telling him the era of oppressive dictators is past.

Erdogan, who is in Tripoli on the final leg of his "Arab Spring" tour, hailed the advent of democracy in Libya and the "memory of martyrs who sacrificed themselves for their country and their religion."