Sanaa, Yemen (CNN) -- Thousands of Yemenis marched again Tuesday to demand the removal of Ali Abdullah Saleh as the embattled president blamed the United States and Israel for the unrest across the region.

"There is a control room working for the media and you know where it is -- in Tel Aviv," Saleh said live on state television. "These events are managed by the White House.

"We hear statements from President (Barack) Obama asking the Egyptians to do this, telling the Tunisians to do that," Saleh said. "Are you the president of the United States or the president of the Arab world?"

Tehran, Iran (CNN) -- Tehran residents reported pockets of protests and clashes with security forces Tuesday on the streets of the Iranian capital.

But protesters appeared, by all accounts, to be heavily outmuscled by police, who showed in force in Tehran's squares and major thoroughfares in anticipation of demonstrations called by supporters of two key opposition leaders.

Along The Libya-Tunisia Border (CNN) -- A green flag fluttering in the wind designated Libyan territory. A short distance away, a red flag flew for Tunisia. In between, a mass of humanity waited in no man's land, desperate to flee escalating rebellion in one nation and cross into another that has already succeeded in toppling a dictator.

Periodically, a ripple flowed through the crowd of thousands of refugees as men took turns passing forward dazed and unconscious travelers, overwhelmed by a treacherous journey to the border and exposure to the elements.

(CNN) -- Protesters hit the streets in Oman Tuesday, the fourth day of demonstrations, according to the Oman News Agency.

On Monday, anti-government protesters in the key port city of Sohar refused to end demonstrations despite orders from the sultan to hire 50,000 people and pay a stipend to people who are out of work, sources in the Gulf state told CNN.

On Tuesday, protesters again gathered in Sohar in a peaceful protest, the news agency reported.

(CNN) -- Venezuelan President Hugo Chavez claims U.S. criticism of Libyan leader Moammar Gadhafi has a clear aim: military invasion.

"Let's not get carried away by the drums of war, because the United States, I am sure that they are exaggerating and distorting things to justify an invasion," Chavez said Monday, according to Venezuelan state media.

At a Monday meeting of the U.N. Human Rights Council in Geneva, Switzerland, U.S. Secretary of State Hillary Clinton said the United States was exploring "all possible options," and that "nothing is off the table so long as the Libyan government continues to threaten and kill Libyan citizens."

Jersusalem (CNN) -- Israeli Prime Minister Benjamin Netanyahu is considering a diplomatic initiative that will seek an interim agreement with the Palestinians rather than one that resolves all core issues, an Israeli government official said Tuesday.

The official, who was not authorized to speak publicly on the issue, said that the latest instability in the region, including the departure of Egypt's Hosni Mubarak, has caused Netanyahu to try to move the stalled process forward.

"Of course, Israel would prefer final status peace agreement, but that has become all but impossible because of the Palestinian refusal to negotiate," the government official said. "We are looking at options for steps forward that will help lead to a two-state solution and move the process forward."