Complex sentence: Before leaving April 1,2008 for Bucharest, Bush told that Russia will not be able to veto Georgia's or Ukraine's inclusion into NATO's Membership Action Plan, which is designed to help aspiring countries meet the requirements of joining the alliance.
Split into simpler sentences: Before leaving April 1,2008 for Bucharest, Bush told that Russia will not be able to veto Georgia's or Ukraine's inclusion into NATO. Bush said that both countries should be able to take part in NATO's Membership Action Plan, which is designed to help aspiring countries meet the requirements of joining the alliance.