The world's most climate-imperilled nations stormed out of consultations in protest at the deadlocked UN COP29 conference Saturday, as simmering tensions over a hard-fought finance deal erupted into the open.

Any amount agreed upon at COP negotiations is typically seen as a "core" sum, intended to be mobilized or leveraged for larger climate investments. However, much of this financing is expected to come in the form of loans, further burdening nations already grappling with heavy debt.