State Department official says extending deadline is an option . Russian foreign minister is heading to Austria for the talks , state media report . International negotiators in Vienna , Austria , are scrambling to reach a deal by Monday 's deadline . Comment: Both sides appear to leave open the possibility of a further extension beyond Monday .
State Department official says extending deadline is an option . Russian foreign minister is heading to Austria for the talks , state media report . Comment: Both sides appear to leave open the possibility of a further extension beyond Monday .