Russia's PM Vladimir Putin ordered security forces to snare the masterminds of the metro bombings that killed 39, saying they should be "scraped out" from the bottom of sewers.
Vietnam has already wrapped up preparations for the hosting of the 16th Summit of the Association of Southeast Asian Nations slated for Hanoi from April 6-9.
PM Nguyen Tan Dung has assigned ministries to prepare 12 bills, reports, statements and draft resolutions which will be presented to the National Assembly Standing Committee
Moscow held a day of mourning for the 38 victims of twin suicide bombings on packed metro trains, as Russian leaders pledged to hunt down and wipe out those behind the attacks.