The opposition in Venezuela will probably use access to that 'frozen' money to buy weapons and to create an army of mercenaries to fight a 'civil' war against the government and its followers. Like in Syria U.S. special forces or some CIA 'contractors' will be eager to help. The supply line for such a war would most likely run through Colombia. If, like 2011 in Syria, a war on the ground is planned it will likely begin in the cities near that border.
The U.S. is using the pretext of 'delivering humanitarian aid' from Columbia to Venezuela to undermine the government and to establish a supply line for further operations. It is another attempt to pull the military onto the coup plotter's side:
[I]f the trucks do get across, the opposition can present itself as an answer to Venezuela’s chronic suffering, while Mr. Maduro will appear to have lost control of the country’s borders. That could accelerate defections from the ruling party and the military.
Dimitris Pantoulas, a political scientist in Caracas, called the opposition’s aid delivery plan a high-stakes gamble.
“This is 99 percent about the military and one percent about the humanitarian aspects,” he said. “The opposition is testing the military’s loyalty, raising their cost of supporting Maduro. Are they with Maduro, or no? Will they reject the aid? If the answer is no, then Maduro’s hours are numbered.”
A New York Times op-ed by a right-wing former foreign minister of Mexico, Jorge G. Castañeda, details the escalation potential:
According to Mr. Guaidó and other sources, $20 million in American medicines and food will be unloaded this week just outside Venezuelan territory in Cúcuta, Colombia; Brazil, and on a Caribbean island — either Aruba or Curaçao — near the Venezuelan coast.
Venezuelan military officials and troops in exile will then move these supplies into Venezuela, where if all goes well, army troops still loyal to Mr. Maduro will not stop their passage nor fire upon them. If they do, the Brazilian and Colombian governments may be willing to back the anti-Maduro soldiers. The threat of a firefight with their neighbors might just be the incentive the Venezuelan military need to jettison Mr. Maduro, making the reality of combat unnecessary.
This escalation strategy is unlikely to work unless some additional provocation is involved. The Venezuelan government blocked the border bridge between Cúcuta in Colombia and San Cristobal in Venezuela. Its military stands ready to stop any violation of the country's border.
The U.S. responded to the blocking of the road with a sanctimonious tweet:
Secretary Pompeo @SecPompeo - 16:55 utc - 6 Feb 2019
The Venezuelan people desperately need humanitarian aid. The U.S. & other countries are trying to help, but #Venezuela’s military under Maduro's orders is blocking aid with trucks and shipping tankers. The Maduro regime must LET THE AID REACH THE STARVING PEOPLE. #EstamosUnidosVE
The U.S. government, which actively helps to starve the people of Yemen into submission, is concerned about Venezuela where so far no one has died of starvation? The lady ain't gonna believe that.