The deal was announced after 11 hours of talks between the 19 eurozone ministers.
Government bank has agreed to a debt restructuring framework with creditors after 'painful' decision to only pay interest on its debt.
Trump may believe American debt holders have no choice but to deal lest their own economy tank.
The country warned that its deteriorating finances could trigger future defaults.
Because Puerto Rico enjoys an ambiguous legal status under U.S. law, it has been left with few options.
Sovereign debt is a prime source of "systemic" danger. That is especially true of small governments in a currency union.
The country's leaders and international creditors have failed to reach a deal over economic reforms.
Russian state-owned oil companies are also expected to sign a deal to explore offshore reserves.