The U.N. Security Council on Thursday condemned the deadliest bomb attacks of Syria's 14-month uprising, urging all sides to stick to an international peace plan after at least 55 people were killed.

The Syrian government and opposition traded the blame for Thursday's twin suicide bomb attacks in Damascus, which also left nearly 400 people wounded in horrific scenes of carnage.

Syria said Thursday's suicide attacks that killed at least 55 people and wounded hundreds was the work of "terrorists" armed and funded by foreign organizations and media.

The foreign ministry made the accusation in a letter to U.N. Secretary General Ban Ki-moon hours after the deadliest bombing attacks of the country's 14-month uprising, which also wounded nearly 400 people in Damascus.

Neither the United Nations nor the African Union can impose its will on Sudan, President Omar al-Bashir said on Thursday, after fresh fighting along the border with South Sudan.

"We will implement what we want and, what we do not want, no one can impose upon us -- neither the U.N. Security Council nor the African Union Peace and Security Council," Bashir said.

U.N. chief Ban Ki-moon urged Israel to try or release hunger-striking Palestinian prisoners after activists denounced his "silence" in a protest outside the U.N.'s West Bank offices.

Dozens of demonstrators calling for action to help the weakening prisoners stopped U.N. employees from entering their offices in Ramallah, waving banners reading: "UNjust" and "UNfair."

United Nations Interim Force in Lebanon (UNIFIL) Commander Maj.-Gen. Paolo Serra voiced his support to the wall that Israel is building along the Lebanese border.

“This project was designed to improve the security in the area and therefore, we cannot allow a de-conflicting project to become a source of conflict in one of the most sensitive areas,” Serra said on Wednesday after chairing a tripartite meeting with senior Lebanese and Israeli security officials at the U.N. headquarters at Ras al-Naqoura crossing.

Defense lawyers before the U.N.-backed court probing former Lebanese premier Rafik Hariri's murder sought Wednesday to have the tribunal's creation declared illegal and unfit to judge their clients.

Lawyers for Salim Ayyash -- one of four men wanted for trial in connection with Hariri's car bomb death in 2005 -- asked "the trial chamber to find that the establishment of the court was not legal."

The United Nations Interim Force in Lebanon (UNIFIL) demanded Israel to stop the building of a wall along the Lebanese-Israeli border after the Israelis removed the barbed wire without putting back any barriers, the National News Agency reported on Monday.

The UNIFIL informed the Israelis that the building of the wall can resume after restoring the barriers along the Fatima Gate in southern Lebanon.

The head of the Arab League, which has played a key role in mediating the Syria crisis, arrived in China on Friday for discussions with top leaders, China's foreign ministry said.

Nabil al-Arabi arrived in the commercial hub of Shanghai and would travel to Beijing on Monday to meet Chinese officials, including Foreign Minister Yang Jiechi, a spokesman said.

Sudan and South Sudan's armies were locked in a tense standoff Thursday hours after a U.N. Security Council ultimatum to end hostilities or face possible sanctions.

"We have no reports" of clashes or air strikes Southern army spokesman Philip Aguer said, after the U.N. body on Wednesday demanded the fighting stop within 48 hours.

Kuwait and Iraq have jointly asked the United Nations to start repairing border markers, delayed for years due to Iraqi objections, a senior Kuwaiti official said on Wednesday.

Kuwait's permanent representative to the UN. .Mansour al-Oteibi told the official KUNA news agency the request was made in a joint letter by him and his Iraqi counterpart, Hamed al-Bayati, on Tuesday.