India, May 24 -- The United States has reissued its highest-level advisory for Venezuela, "Do not travel," since the government "has no ability to provide emergency services to U.S. citizens" who are in distress.

This warning was issued in response to civil unrest, a "slide towards dictatorship," recurrent terrorism threats, and anti-American sentiments."Violent crimes, such as homicide, armed robbery, kidnapping, and carjacking, are common in Venezuela," officials added.

The situation has become so precarious that the US government has recommended travellers who persist on going to set up a "proof of life" protocol with their loved ones.

"If you are taken hostage, your loved ones know specific questions (and answers) to ask the hostag...