Assembling a tunnel boring machine at a factory in China. Beijing recently moved to control the exports of dozens of technologies, including such machines.
The Treasury Department accused Rwanda of undermining a U.S.-brokered peace agreement by supporting a rebel group in the eastern Democratic Republic of Congo.
Soldiers from the M23 rebel group in Goma, the Democratic Republic of Congo, in January. The United States has accused Rwanda of continuing to support the group.
Officials in Argentina said Mr. Bolsonaro entered the country by land then flew to Ecuador. Brazilian police had asked him to hand over his passports because of his links to an investigation.