Demonstrators rallied in London, Paris and Istanbul on Sunday in support of protests in Iran that have been countered with a deadly crackdown by the country's security forces.

London demonstrations, initially in front of the Iranian embassy and later in front of the British prime minister's residence, grew to several thousand as the day progressed.

"We want revolution, change the regime," Afsi, a 38-year-old Iranian, who declined to give her last name, told AFP at the rally in front of Downing Street.

Jan 11 (Reuters) - U.S. President Donald Trump is scheduled to be briefed by senior officials in his administration on Tuesday on specific options to respond to the protests in Iran, the Wall Street Journal reported on Sunday, citing U.S. officials.

The meeting will be a discussion about possible next steps including military strikes, deploying secretive cyber weapons against Iranian military and civilian sites, placing more sanctions on Iran's government and boosting anti-government sources online, the Journal reported.

The White House said it had no comment on the report.

DUBAI, Jan 11 (Reuters) - Deaths from two weeks of protests in Iran have risen to more than 500, U.S.-based rights group HRANA said on Sunday.

Its latest spreadsheet - based on activists inside and outside Iran - showed 490 protesters and 48 security personnel killed, plus 10,000 arrests.

Reuters could not independently confirm the figures and Iranian authorities have not given tolls from the unrest it blames on "rioters" being encouraged by foreign powers.

(Reporting by Dubai Newsroom)

Residents of a Kurdish neighbourhood in Syria's second city of Aleppo passed through government checkpoints Sunday to find blackened walls, destroyed vehicles and debris-littered streets as they returned home after days of deadly clashes.

While they picked up the pieces in the city's Ashrafiyeh neighbourhood, the city's only other Kurdish-majority district Sheikh Maqsud still remained off limits after suffering the worst of the fighting.

Many locals like wheelchair-bound Abdul Qader Satar returned to Ashrafiyeh on Sunday to inspect their homes after days of violence.

Turkey on Sunday prevented Iranian nationals from protesting outside Iran's consulate in Istanbul, with the area cordoned off and crowds blocked by police.

Iran has been roiled by street protests since December 28 that have taken hold nationwide, challenging the theocratic government that has ruled the country since the 1979 revolution.

Turkey, a majority Sunni Muslim country, shares a border of around 500 kilometres (300 miles) and three land crossings with its Shiite neighbour Iran. It hosts more than 74,000 Iranians with residence permits and around 5,000 refugees.

Syria's government was in full control of Aleppo on Sunday after taking over the city's Kurdish neighbourhoods and evacuating fighters there to Kurdish autonomous areas following days of deadly clashes.

Residents of the Ashrafiyeh neighbourhood, the first of two areas to fall to the Syrian army, began returning to their homes to inspect the damage, finding shrapnel and broken glass littering the streets.

The violence started earlier this week after negotiations stalled on integrating the Kurds' de facto autonomous administration and forces into the country's new government.

CAIRO, Jan 11 (Reuters) - Israeli fire killed at least three Palestinians in two separate incidents across the enclave, local health authorities said, as tension rises over continued violence.

Medics said one Palestinian was killed in the Tuffah neighbourhood in Gaza City, in an area under Palestinian control, while two others were killed in the town of Bani Suhaila east of Khan Younis, an area Israel still occupies.

There was no comment from the Israeli military on the two incidents.

Jan 11 (Reuters) - In a nation where opposition to almost half a century of clerical rule has long been fragmented, the son of the last shah of Iran has become a prominent voice spurring on protesters staging the biggest anti-government demonstrations in years.

Reza Pahlavi, 65, has sought to speak as a national leader despite living outside Iran since before his father was toppled in the 1979 Islamic Revolution.

By Parisa Hafezi, Rami Ayyub and Maayan Lubell

DUBAI/JERUSALEM, Jan 11 (Reuters) - Tehran threatened on Sunday to retaliate against Israel and U.S. military bases in the event of U.S. strikes on Iran, issuing the warning as Israeli sources said Israel was on high alert for the possibility of any U.S. intervention.

At a hospital in Gaza, wards are filled with patients fearing they will be left without care if Doctors Without Borders (MSF) is forced out under an Israeli ban due to take effect in March.

Last month, Israel announced it would prevent 37 aid organisations, including MSF, from operating in Gaza from March 1 for failing to provide detailed information on their Palestinian staff.

"They stood by us throughout the war," said 10-year-old Adam Asfour, his left arm pinned with metal rods after he was wounded by shrapnel in a bombing in September.