Iranian diplomats have visited three Iranian suspects implicated in a series of bomb explosions in Thailand, the foreign ministry said on Tuesday according to the Fars news agency.

Iran's deputy foreign minister in charge of Asia and Oceanic affairs, Abbas Araqchi, was quoted as saying of the February 14 explosions in Bangkok: "We still do not know who is behind this and why they have done it."

Israeli officials say they won't warn the U.S. if they decide to launch a pre-emptive strike against Iranian nuclear facilities, according to one U.S. intelligence official familiar with the discussions. The pronouncement, delivered in a series of private, top-level conversations, sets a tense tone ahead of meetings in the coming days at the White House and Capitol Hill.

Israeli officials said that if they eventually decide a strike is necessary, they would keep the Americans in the dark to decrease the likelihood that the U.S. would be held responsible for failing to stop Israel's potential attack. The U.S. has been working with the Israelis for months to convince them that an attack would be only a temporary setback to Iran's nuclear program.

Israeli forces engaged in a firefight overnight with gunmen who infiltrated from Egypt's Sinai peninsula, killing one, the Israeli military said on Tuesday.

"Soldiers patrolling along the Israel-Egypt border identified a number of suspects who had infiltrated into Israel," the military said in a statement.

Energy Minister Jebran Bassil urged on Tuesday Lebanese to deal with the oil exploration as an “exceptional” issue that needs to be resolved swiftly in order to kick off the natural resources exploration.

“We have settled the issue of setting a rotating presidency for the committee” tasked with administrating the oil sector, Bassil told As Safir newspaper.

Israel's new ambassador to Egypt, Yaakov Amitai, presented on Monday his credentials to Egypt's ruling Field Marshal Hussein Tantawi, Israel's foreign ministry said.

According to a statement, Amitai and Tantawi "exchanged words through which they emphasized the importance of the peace agreement and cooperation to both countries."

Iranian Foreign Minister Ali Akbar Salehi on Sunday stressed the importance of “broadening bilateral ties with Lebanon, particularly in the defense field,” during talks with Defense Minister Fayez Ghosn in Tehran, the Iranian news agency ISNA reported.

Ghosn and Salehi discussed bilateral, regional and international issues, it said.

Israeli Defense Minister Ehud Barak has left for Washington on a two-day U.S. trip expected to include meetings with senior administration officials, Israel's defense ministry said on Monday.

"Minister of Defense Ehud Barak left this morning for a two-day working visit in Washington DC. During the trip, the minister will discuss a host of regional issues with a number of leading figures in the administration," the ministry said in a statement.

Israel's national rail company on Monday confirmed it has prepared a plan for the first railway system to operate in the occupied West Bank, at the request of the transport ministry.

A spokesman for Israel Railways said the company had put together the plan, which was first reported on Monday by Israeli daily Haaretz.

Qatar urged the United Nations on Sunday to investigate Jewish settlement expansion in annexed Arab east Jerusalem, warning that Israel's occupation of the Palestinian territories was unacceptable.

"We must act quickly to stop the Judaization of Jerusalem," said Qatar's emir, Sheikh Hamad bin Khalifa al-Thani, at the International Conference on Jerusalem in Doha.

The fall of Syria's President Bashar Assad would end an axis with Iran and its President Mahmud Ahmadinejad, benefiting Israel, the country's intelligence minister said on Sunday.

"There is an Assad-Ahmadinejad axis, a Tehran-Damascus axis," Israeli intelligence minister Dan Meridor told military radio. "Breaking this axis would be good for Israel."