Kremlin spokesman Dmitry Peskov attends a meeting of Russian President Vladimir Putin with Qatar's Emir Sheikh Tamim bin Hamad al-Thani at the Kremlin in Moscow, Russia March 26, 2018. REUTERS/Sergei Karpukhin

MOSCOW (Reuters) - The Kremlin said on Tuesday it did not understand the basis for British and U.S. allegations that Russia was conducting a global cyber espionage campaign.

The United States and Britain said on Monday that Russian government-backed hackers had infected computer routers around the world, targeting government agencies, businesses and critical infrastructure.

Kremlin spokesman Dmitry Peskov told reporters in a conference call that London and Washington had not presented any evidence.