upping the ante: increasing the level
of demands; asking for more of something
sanctions: international restrictions
that mean certain things cannot be sold to a particular country
a nuclear freeze: stopping the
further development of nuclear weapons
final word: last offer
initially refused to negotiate:
at first would not discuss
scrap: cancel
security guarantees: when one country
says it will protect another country from attack
addressed: discussed and dealt
with
loss of momentum: slowing down the speed of progress
shuttle diplomacy: when officials
from a third country travel often between two other countries
to try and help to solve a problem