Cuba has indicated its commitment.
"Ronald Kenneth Noble" is an American Law enforcement agency/law enforcement officer, and a former Secretary-General of Interpol.More Ronald Noble on Wikipedia.
There cannot be any countries in the world that do not participate in the fight against terrorism.
The case may not be worth pursuing.
During the Olympics, in times when nobody is immune from the threat of terrorism, Interpol will provide its operational support to Italy and every other participating country.
Their escape cannot be considered an internal problem for Yemen alone.