MOSCOW, December 28. /TASS/. Moscow is worried over the escalation of tensions on the Pakistani-Afghan border and urges both sides to show restraint and engage in constructive dialogue, Russian Foreign Ministry Spokeswoman Maria Zakharova said in a commentary.

"Moscow is concerned over the escalation of tensions on the Pakistani-Afghan border where not only the military but also civilians perish in shootouts. We are calling on the sides involved to show restraint and engage in constructive dialogue, aiming to peacefully resolve all differences," the diplomat emphasized.

Earlier, Afghanistan's Ariana News reported clashes on the border between Afghanistan and Pakistan.