India's Prime Minister Narendra Modi and Russia's President Vladimir Putin attend a signing ceremony during Shanghai Cooperation Organization (SCO) summit in Qingdao, Shandong Province, China June 10, 2018. REUTERS/Aly Song

MOSCOW (Reuters) - Moscow and Delhi will sign a deal worth more than $5 billion on the delivery of Russian S-400 anti-aircraft missiles when President Vladimir Putin visits India later this week, Kremlin aide Yuri Ushakov said on Tuesday.