March 28: UN military observers in Gorazde say Serbs massing for an attack.
March 30: Bosnian radio reports heavy Serb artillery and infantry attack.
April 1: Serbs move in about 50 tanks.
April 3: US Defense Secretary William Perry says US will ``not enter the war'' to keep Gorazde from falling.
April 4: Lt. Gen. Michael Rose, UN commander in Bosnia, says he will visit Gorazde.
April 5: Serbs breach defense lines on three sides of the enclave. Hundreds of civilians flee burning villages.
April 6: Bosnian Serbs prevent Rose from traveling to Gorazde. Bosnian Serb leader Radovan Karadzic proposes new talks with government and tells Rose his forces will not attack Gorazde.
April 7: Rose presents Bosnian Serb and government commanders with a draft cease-fire proposal. Bosnian government announces a 24-hour cease-fire. Bosnian Serbs say they will hold fire if the government does. US officials say Washington hasn't ruled out use of NATO air power to protect UN troops in Gorazde.
April 8: A Bosnian Serb general says Serb forces will soon ``occupy the entire region of Gorazde.'' Talks on a cease-fire stall.
April 9: UN Secretary-General Boutros Boutros-Ghali tells UN forces to use ``all available means'' to get Serbs back to positions they held before latest offensive. UN officials say Serbs have taken key ridge overlooking Gorazde.
April 10: UN observers request NATO intervention. Two US F-16s bomb targets around Gorazde. A UN statement says artillery attacks stop afterward.
April 11: Bosnian Serbs suspended peace talks with UN and US. They continued shelling Gorazde. NATO sent two more aircraft, which bombed Serb equipment.
April 12: Gorazde reportedly calm.