Lit candles are placed on the ground as people gather to attend a memorial service before the funeral of Russian leading opposition figure Boris Nemtsov in Moscow, March 3, 2015. Several hundred Russians, many carrying red carnations, queued on Tuesday to pay their respects to Boris Nemtsov, the Kremlin critic whose murder last week showed the hazards of speaking out against Russian President Vladimir Putin. REUTERS/Maxim Shemetov

A man walks past graffiti depicting the missing Malaysia Airlines flight MH370 on the one year anniversary of its disappearance in Kuala Lumpur, March 8, 2015. Prime Minister Najib Razak said on Sunday Malaysia remains committed to the search for the missing MH370 jetliner a year after it vanished without trace and he is hopeful it will be found. REUTERS/Olivia Harris (MALAYSIA - Tags: TRANSPORT DISASTER ANNIVERSARY)