The US action against senior army officers comes as the military has continued to 'commit human rights violations'.
Arrests made after cache of arms, including air-to-air missile, rocket launchers as well as Nazi memorabilia found.
It's unclear when S-400s will be installed but Turkey the first NATO member to operate the Russian missile system.
EU's foreign policy chief calls for calm amid soaring Gulf tensions, Tehran to comply with unravelling 2015 accord.
Space agency ISRO says launch of Chandrayaan-2 called off minutes before blast-off due to a technical snag.
Iranian leader Rouhani says Tehran open for dialogue if sanctions are lifted and US returns to nuclear deal.
Protests' focus veers from extradition bill to broader issues increasing tension between HK people and mainland Chinese.
UK Foreign Minister Hunt says concern was 'destination not origin' after 'constructive call' with Iranian counterpart.