Main news of April 5

RUSSIA

* U.S. President George Bush has arrived in the southern Russian city of Sochi on a two-day visit set to focus on missile defense and a strategic security deal

* Moscow's mayor pledged to introduce a tough system of control over workers carrying out repair work in residential buildings following Friday's explosion that left three dead and said the most likely reason for the blast was careless handling of a propane-butane device by two students

* Moscow police detained 25 National Bolshevik Party (NBP) activists for attempting to hold an unsanctioned rally, a police spokesman said

* Residents of a Moscow tower block hit by an explosion that killed three people have been let back into their apartments to collect their belongings, the emergencies ministry said

WORLD

* Ukraine's coast guards have detained a Turkish fishing vessel whose crew failed to show authorization to enter the country's economic zone, the Ukrainian border guard service said

* Iran will hold its second Nuclear Technology Day on April 8, during which the government will tout the country's new achievements in the nuclear sector

* Five sailors from a Chinese fishing boat that collided with a South Korean cargo vessel on Saturday morning are missing, Seoul's Yonhap news agency reported

* India signed a memorandum of understanding on oil and gas with Turkmenistan, in a bid to open up Indian companies' access to the Central Asian country's rich reserves

* Russia's Nikolay Davydenko defeated Andy Roddick of the United States 7-6 (5), 6-2 at the Sony Ericsson Open in Miami to set up a final against Spain's Rafael Nadal