Indonesia and Russia pledged on Wednesday to strengthen cooperation in cyber-security and counter-terrorism as concern grows about the spread of radicalism in Southeast Asia. Russian Foreign Minister Sergei Lavrov, who is on a two-day visit to Indonesia, said the two countries would work together more closely to counter the spread of Islamic State (IS) ideology. "The threat that the ISIL is has not vanished. Its members have been spreading all over the world, including areas close to the Russian and Indonesian borders," Lavrov said, using another acronym for the group.