DUSHANBE (AFP) - Twelve government troops and 30 militants have been killed in clashes in eastern Tajikistan in a military operation to reassert federal control over the region, the security service said Tuesday. Some 40 militants, including eight Afghan citizens, have been arrested while 23 troops were also wounded in the clashes in the eastern Badakhshan province, the security service said in a statement read on state TV. The clashes mark the biggest upsurge of internal unrest for two years in Tajikistan. The source said the dead and wounded were being transferred by helicopter to the capital Dushanbe, adding that the militants suffered an unknown number of casualties.