The leader of Armenia on Tuesday questioned the role of Russian peacekeepers in Nagorno-Karabakh as he discussed a blockade of the breakaway region with President Vladimir Putin. Since mid-December Azerbaijani activists have been blocking the Lachin corridor, the only land link between Armenia and Karabakh, to protest what they claim is illegal mining. As a result of the blockade, the mountainous region of some 120,000 people is running short of food, medicines and fuel. Day 16, the road from Nagorno Karabakh to Armenia, the Lachin Corridor, remains blocked by Azerbaijan. The only supply route…