The Observer's 20 photographs of the week

Anti-government protesters give roses to security personnel through razor wire outside the Defense Ministry in Bangkok Photograph: Damir Sagolj/Reuters

Evelyn Hernandez Sanchez, 30, holds up an x-ray of her skull at the facial surgery unit at the Rosales hospital in San Salvador. A report states that over a quarter of women surveyed in both Guatemala and El Salvador said they had experienced physical or sexual violence from a partner. Sanchez was hit in the face with the butt of a 9mm gun by her husband Photograph: Ulises Rodriguez/Reuters

A supporter of the Muslim Brotherhood and ousted Egyptian President Mohamed Morsi shouts slogans in front of teargas fired by riot police and the army, during clashes at El-Talbyia, Cairo Photograph: Amr Abdallah Dalsh/Reuters

A man walks amid clashes between Muslim Brotherhood supporters and the Egyptian security forces in Cairo as teargas is fired Photograph: Mahmoud Khaled/AFP/Getty

Photographer Odd Andersen continues his impressive work documenting the aftermath of super typhoon Haiyan in the Philippines. Here, a victim holds her one-year-old daughter as she looks at her flattened home and the devastated waterfront community in Tacloban Photograph: Odd Andersen/AFP

A Philippine Air Forces helicopter drops relief supplies for survivors of super typhoon Haiyan Photograph: Athit Perawongmetha/Reuters

Typhoon survivors participate in a 'cash for work' programme, cleaning debris from destroyed houses in Tacloban, Leyte province Photograph: Noel Celis/AFP

Salam, an African lion, in the branches of a tree at the Ramt Gan safari Zoological Centre near Tel Aviv, Israel Photograph: Ariel Schalit/AP

Donna Auchinvole with Duke and Lorraine Clark with Barron, two Clydesdale horses, attend a topping out ceremony at The Kelpies in Falkirk, Scotland. Construction work has been completed on Andy Scott's sculptures Photograph: Jeff J Mitchell/Getty

Musician Lady Gaga arrives atop a horse puppet at the 41st American Music Awards in Los Angeles, California Photograph: Mario Anzuoni/Reuters

Palestinian protesters try to climb the Israeli separation barrier during clashes at the Qalandia checkpoint following the funeral of a young Palestinian Photograph: Federico Scoppa/Corbis

A masked Palestinian protester throws a Molotov cocktail during clashes with Israeli security officers following the funerals of three Palestinians in the West Bank city of Hebron Photograph: Ammar Awad/Reuters

Former shot put champion Jassem al-Tohme, known as Abu Kazem, holds a homemade bomb as he demonstrates to rebel fighters the best position when throwing explosives on forces loyal to Syria's President Bashar al-Assad, in Deir al-Zor, eastern Syria Photograph: Khalil Ashawi/Reuters

A figure from the series called The Travellers by Cedric Le Borgne over looking the peace bridge in Derry, Northern Ireland, as the Lumiere festival opens as part of the UK City of Culture celebrations Photograph: Niall Carson/PA

A crocodile is photographed next to the 13th green during the second round of the Alfred Dunhill Championship at Leopard Creek Country Club in Malelane, South Africa Photograph: Warren Little/Getty

Tribesmen lead their camels through the sand dunes of the Liwa desert, United Arab Emirates Photograph: Karim Sahib/AFP

Anti-narcotics police officers guard on top of a hill during a drug incineration in Lima. About eight tons of drugs including cocaine, cocaine paste, marijuana and opium were incinerated, according to the Interior Ministry Photograph: Enrique Castro-Mendivil/Reuters

A man holds his son while walking on dried corn with Mount Sinabung spewing ash in the background at Sibintun village in Indonesia's North Sumatra province Photograph: Beawiharta/Reuters

The number of displaced persons has increased to 18,000 in Western Indonesia as Mount Sinabung continues to spew ash and smoke Photograph: Ulet Ifansasti/Getty

Photographer Markus Schreiber shows how to take an interesting image from a mundane assignment at a news conference to announce a coalition agreement in Berlin Photograph: Markus Schreiber/AP