Ethiopia's prime minister has said his country "will not cave in to aggressions of any kind" after President Donald Trump suggested Egypt could destroy a controversial Nile dam.
The Grand Ethiopian Renaissance Dam is at the centre of a long-running dispute involving Ethiopia, Egypt and Sudan.
Mr Trump said Egypt would not be able to live with the dam and might "blow up" the construction.
Ethiopia sees the US as siding with Egypt in the dispute.
The US announced in September that it would cut some aid to Ethiopia after it began filling the reservoir behind the dam in July.
Why is the dam disputed?
Egypt relies for the bulk of its water needs on the Nile and is concerned supplies could be cut off and its economy undermined as Ethiopia takes control of the flow of Africa's longest river.
Once complete, the $4bn (£3bn) structure on the Blue Nile in western Ethiopia will be Africa's largest hydro-electric project.
The speed with which Ethiopia fills up the dam will govern how severely Egypt is affected - the slower the better as far as Cairo is concerned.
That process is expected to take several years.