The senator says he "cannot in good conscience" approve the plan, which is backed by President Trump.
Russia's foreign minister says Donald Trump and Kim Jong-un are acting like fighting schoolchildren.
More than 70,000 people who live near the dam are warned they face "a life-threatening situation".
The beauty pageant's organisers say they discovered the "unacceptable" tweet after the ceremony.
Soldiers are sent to help Rio police after heavily-armed drug gangs fought over its biggest favela.
Despite a recent surge by Labour, incumbent Bill English has a slight lead in opinion polls.
UK prime minister says transition period needed before new "partnership" with EU, in Brexit speech.
About 10,000 people are evacuated amid fears an eruption on the Indonesian island could be imminent.
Ride-hailing app Uber is "not fit and proper" to operate in London, the transport regulator says.
A British helicopter lifted a woman and two children from a vessel to safety as Hurricane Maria hit the Caribbean.
The San Ysidro border crossing is closing for the weekend to enable construction work to go ahead.
The two women were friends of US aid worker Kayla Mueller, who died in IS captivity in Syria.
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