Myanmar's ruling military has announced a temporary ceasefire against rebel groups across the country following last week's devastating earthquake that has now killed more than 3,000 people. State-run media reported that the army wouldn't undertake operations against armed opponents between April 2 and April 22. Help is urgently needed Photo shows A building can be seen almost on its side, yet intact The ABC is working in partnership with the Emergency Action Alliance to help those affected by the disaster. In a statement, the military said the decision was made "with the aim of speeding up relief and reconstruction efforts,…