Who were the following presidents most hostile with, meaning who hated them the most and who did they hate the most?

**Barack Obama -** Vladimir Putin, Abu Bakr al-Baghdadi, Osama Bin Laden, Muammar Gaddafi, 

**George W Bush -** Saddam Hussein, Osama Bin Laden, Mullah Omar, Abu Musab al-Zarqawi, Khalid Sheikh Mohammed

**Bill Clinton -** Osama Bin Laden, Saddam Hussein

**George HW Bush -** Saddam Hussein, Manuel Noriega

**Ronald Reagan -** Leonid Brezhnev, Ayatollah Ruhullah Khomeini

**Jimmy Carter -** Leonid Brezhnev, Ayatollah Ruhullah Khomeini

**Gerald Ford -** Le Duan / Tôn Đức Thắng

**Richard Nixon -** Le Duan / Tôn Đức Thắng, Indira Gandhi

**Lyndon B Johnson -** Ho Chi Minh, Nikita Krushchev

**John F Kennedy -** Nikita Krushchev, Fidel Castro

**Dwight D Eisenhower -** Adolf Hitler, Josef Stalin, Nikita Krushchev, Mao Zedong, Erwin Rommel

**Harry S Truman -** Adolf Hitler, Josef Stalin, Hideki Tojo, Mao Zedong, Kim il Sung

**Franklin D Roosevelt -** Adolf Hitler, Hideki Tojo, Benito Mussolini

**Herbert Hoover -** Vladimir Lenin, Josef Stalin

i tried to only list relevant enemies or haters, with some presidents having a much longer list than others (Truman or W Bush vs HW Bush or Ford for instance)

Every US President's greatest foreign enemy of their entire life. The first names listed are the president's greatest enemy for presidents with several enemies, decreasing in levels of animosity afterward. (part 1. Great Depression - Present)