Yes, as a US citizen, you do not need a visa to travel to Ireland for stays of up to 90 days.
Yes, US citizens do not need a visa to visit Ireland for stays of up to 90 days.
Yes, US citizens need a visa to travel to London.
Yes, US citizens need a visa to travel to Kazakhstan.
Yes, US citizens need a visa to travel to Russia.
Yes, US citizens need a visa to travel to Uzbekistan.
No, not for a short-term visit, if you are a U.S. citizen. Yes, if you plan to stay or work.
Yes, US citizens need a visa to travel to the Philippines.
Yes, US citizens need a visa to travel to Saudi Arabia.
Yes, US citizens do not need a visa to visit Ireland for stays of up to 90 days for tourism or business purposes.
Yes, a US citizen needs a visa to travel to Russia.
May be Afghanistan is the only friend country for USA, in which US citizens need Visa to travel.