The US has been pressuring its allies to adopt new targets for defence spending in response to the Russian threat.
More than 20 years of US wars have directly killed an estimated 940,000 people and cost the US $5.8 trillion.
Trump slams Netanyahu for truce violation, says it is still in effect and that he is not seeking regime change in Iran.
As Trump hits the Horn of Africa, experts caution against drone strikes, saying the US needs to invest in peacebuilding.