International investigators have submitted a list of Syrian military and political officials suspected of crimes against humanity to the U.N.'s top human rights official, their report said on Thursday.

"The commission has deposited with the High Commissioner (for Human Rights, Navi Pillay) a comprehensive database containing all evidence collected," said the report from an international commission of inquiry.

A delegation of senior Iraqi officials has visited Saudi Arabia in the latest sign of apparently warming ties between the neighbors, Iraq's interior ministry said in a statement on Thursday.

News of the visit came after Shiite-led Iraq said it would approve the nomination of a new ambassador to Baghdad from the Sunni-ruled kingdom -- the first since 1990.

Syria's government has "manifestly failed" to protect its people, an inquiry commissioned by the U.N. Human Rights Council said on Thursday.

"The human rights situation in the Syrian Arab Republic has deteriorated significantly since November 2011, causing further suffering to the Syrian people," wrote the international commission of inquiry after conducting 136 new interviews since its previous report last November.

The Syrian regime was not responsible for the deaths of two Western journalists who "sneaked" into the country, the foreign ministry said on Thursday.

"We reject statements holding Syria responsible for the deaths of journalists who sneaked into its territory at their own risk," said a ministry statement carried by SANA state news agency.

A Kuwaiti Shiite lawmaker on Thursday proposed an anti-hatred bill that calls for stiff jail terms for those who incite religious, social, racial and gender hatred.

The proposal is aimed at preventing increasing levels of hate speech in the traditional and electronic media in the oil-rich but ethnically and religiously divided Gulf state, MP Faisal al-Duwaisan said in the written bill.

A wave of attacks blamed on al-Qaida killed at least 39 people on Thursday, in what Iraq's parliament speaker said was an attempt to derail an Arab League summit planned for the end of March.

Security officials and medical sources said more than 250 people were wounded in the attacks, which hit six different provinces, and came just days after a suicide blast near a Baghdad police academy.

Campaigning began in Iran on Thursday for parliamentary elections to take place on March 2, with officials and state media calling for a big turnout to counter the "enemies' threats" against the regime.

It will be the Islamic republic's first national poll since the controversial 2009 re-election of President Mahmoud Ahmadinejad.

Britain summoned the Syrian ambassador on Wednesday to lodge a protest over the deaths of two Western journalists and demand the repatriation of their bodies, the Foreign Office said.

U.S.-born war correspondent Marie Colvin, who worked for Britain's Sunday Times newspaper, and French photojournalist Remi Ochlik were killed on Wednesday by shell fire in the rebel Syrian city of Homs.

Russian President Dmitry Medvedev and his Iranian counterpart Mahmoud Ahmadinejad said in telephone talks on Wednesday that they reject foreign intervention in the Syria crisis, the Kremlin said.

"The sides spoke out in favor of the quickest resolution of the crisis by the Syrian people themselves through exclusively peaceful means and without foreign intervention," the Kremlin said in a statement.

Iraqi security forces on Wednesday arrested the head of Ansar al-Sunna, a Sunni insurgent group said to be linked to Al-Qaeda, the counter-terrorism chief for Anbar province said.

"Iraqi forces today arrested the leader of Ansar al-Sunna, Walid Khaled Ali, as he tried to illegally infiltrate into Iraqi territory from Syria," Brigadier General Khaled al-Dulaimi told Agence France Presse.