Photos Of The Week -- April 16-22

An Iranian student from a university in the city of Qazvin sits behind a religious flag as she takes part in a three-day sit-in demonstration outside the Saudi Embassy in Tehran on April 22, to protest against Saudi Arabia's support of Bahraini leaders during the suppression of Bahrain's recent antigovernment protests.

Photo by Morteza Nikoubazl for Reuters

A light burns next to two cameras posed symbolicallly during a memorial service for slain photojournalists Tim Hetherington and Chris Hondros held in Benghazi on April 21. Fellow media workers, diplomats, local rebel officials and relief workers paid homage to the pair, who were killed by a mortar strike in the besieged western Libyan city of Misurata on April 20.

Photo by Odd Andersen for AFP

A participant of the international conference "25 years after Chernobyl" lights a candle in Minsk on April 18. Belarus, Ukraine, and Russia will mark the 25th anniversary of the nuclear reactor explosion in Chornobyl, site of the world's worst civil nuclear accident, on April 26.

Photo by Vasily Fedosenko for Reuters

Workers wash and clean a statue of Vladimir Lenin, founder of the Soviet state and creator of the Soviet Communist Party, in central Krasnoyarsk on April 20, 2011. Supporters of Lenin marked the 141st anniversary of his birth on April 22.

Photo by Ilya Naymushin for Reuters

Russian communist supporters holding a portrait of Vladimir Lenin enter Red Square in Moscow on April 22 to pay their respects at his tomb on the 141st anniversary of his birth.

Photo by Natalia Kolesnikova for AFP

Dry grass, bushes and trees burn on the bank of the Yenisei River in the Taiga district, near Russia's Siberian city of Krasnoyarsk, on April 21, 2011. Russia faces a danger of forest fires in Siberia and its Far East, following blazes that ravaged thousands of hectares of land last year, Prime Minister Vladimir Putin said.

Photo by Ilya Naymushin for Reuters

A rebel fighter holds up a packet of cigarettes with a "health warning" sticker that features a caricature of Libyan leader Muammar Qaddafi near the front line along the western entrance of Ajdabiya on April 18.

Photo by Amr Abdallah Dalsh for Reuters

A member of a local rock-climbing club jumps on floating ice during an ice drift on the Yenisei River in the Russian city of Krasnoyarsk on April 18.

Photo by Ilya Naymushin for Reuters

An Afghan man rides his donkey near Patrol Base Torbert in the Banadar corridor, Garmsher district, Helmand Province, on April 19.

Photo by Bay Ismoyo for AFP

Students pose for a photo with a globe during a campaign to mark World Earth Day in a middle school in Dexing, China on April 19. World Earth Day falls on April 22 every year.

Photo by China Daily/Reuters