Opposition leader Juan Guaido has called on the international community to consider “all options” to resolve Venezuela's crisis, a dramatic escalation in rhetoric that echoes comments from the Trump administration hinting at potential U.S. military involvement.

Guaido's comments late Saturday came after a tumultuous day that saw President Nicolas Maduro's forces fire tear gas and buckshot on activists trying to deliver humanitarian aid in violent clashes that left two people dead and some 300 injured.

For weeks, the U.S. and regional allies had been amassing emergency food and medical kits on Venezuela's borders in anticipation of carrying out a “humanitarian avalanche” by land and sea to undermine Maduro's rule.