The former Massachusetts senator and 2004 Democratic presidential candidate is no stranger to foreign affairs, having spent almost three decades in the USsenate as a member of the SenateForeignRelationsCommittee.
Mr Kerry, former Massachusetts senator and 2004 Democratic presidential candidate, has spent almost three decades in the USSenate as a member of the ForeignRelationsCommittee.
In a rare appearance at the US Capitol on Wednesday, Mrs Clinton spoke alongside SenateForeignRelationsCommittee chairman John Kerry and Republican Senator Richard Lugar, also urging the Senate to ratify the treaty in response to a "continuing threat that is posed to our country".