Major donors, including the United States, had all but ended aid to the government.
The accord called for ending outside aid to "irregular forces or insurgent movements."
If Congress votes to end aid to the contras, their insurgency will probably come close to collapse.
It announced it would try to end financial aid to any agency that so much as mentioned abortion.
Washington could agree to end contra aid in advance of the Sandinistas' granting further liberties.
The Senate approved a resolution last week urging caution in agreeing to end aid to the guerrillas, estimated at more than $600 million a year.
Congressmen who truly support the Arias plan will see that and avoid a final decision to end aid now.
By then, governments are to institute democratic measures and outsiders must end aid to rebels.
The European Council decided to end aid to this industry after the year 2000, recommending efforts at competitiveness through recourse to new technology.
Tonight, with barely a fourth of the House present, members by voice vote rebuffed efforts to end aid immediately.