April 23, 2007 (Monday)
- Former Russian President Boris Yeltsin dies at the age of 76. (BBC) (CNN)
- Iraq Insurgency:
- Prime Minister Nouri Maliki calls for construction to be halted on the three-mile wall being built by the United States military around the predominantly Sunni district of Adhamiyah, Baghdad. Thousands of Iraqis also protest the wall. (Guardian) (BBC) (CNN)
- Nine U.S. soldiers are killed by a suicide car bomb near a United States Army patrol base in Diyala. (CNN), (BBC)
- Three of the six members of the Bali Nine – Tan Duc Thanh Nguyen, Si Yi Chen and Matthew Norman – who were sentenced to death have launched a judicial review appeal with Denpasar's District Court. (ABC News Australia)
- Barclays plc agrees to buy ABN Amro in a €67 billion deal. (Bloomberg)
- Umaru Yar'Adua is declared the winner of Nigeria's presidential election that EU observers said "cannot be considered to have been credible." (Washington Post) Archived 2012-10-26 at the Wayback Machine, (BBC)
- NASA releases the first 3D images of the Sun acquired by the STEREO spacecraft. (PhysOrg)
- The United States' 391st National Park Unit, Sand Creek Massacre National Historic Site, is formally established. (NPS)
- VA allows Wiccan symbols on headstones. (CNN), (Fox)