The region's biggest economy maintains a neutral foreign policy, refusing to take sides in the Ukraine conflict or in great power competition between Washington and Beijing.

But newly inaugurated Indonesian President Prabowo Subianto has pledged to be bolder on the world stage and in July visited Moscow for talks with Vladimir Putin.

The five-day drills will take place in two phases at a naval base in Surabaya and in the Java Sea.

Russia has sent three corvette class warships, a medium tanker ship, a military helicopter, and a tug boat, the Indonesian navy said in a statement last week.

Local broadcasters showed Russian ships calling into port and being welcomed by an Indonesian marching band on Sunday ahead of the drills.

Analysts say the joint exercises signal Prabowo is beginning a significant foreign policy shift, pledging to boost Jakarta's alliances with major powers.

During a visit to the Kremlin in July, Prabowo -- a 73-year-old ex-general -- said he wanted to deepen the relationship with Russia.

"We consider Russia as a great friend and I would like to continue to maintain and enhance this relationship," Prabowo told Putin.

The southeast Asian ASEAN bloc, which Indonesia is a member of, held joint exercises with Russia in 2021, but Jakarta had never held drills alone with Moscow before this week.

Jakarta has billion-dollar trade ties with Moscow, yet major arms imports have stalled in recent years after Russia seized Crimea in 2014 and launched its full-scale military offensive on Ukraine in 2022.

Still, since becoming defence minister in 2019 Prabowo has kept alive a $1.1 billion Russian fighter jet deal agreed a year earlier, despite the reported threat of US sanctions.