This week, the U.S. and Iran signed an agreement to end hostilities, reopen oil routes and begin negotiations on the Iranian nuclear program. But Trump's deal has been criticized at home and abroad.

Subroutines are usually small in size, which means they are much easier to write, test and debug. They are also easy for someone else to understand. As they are written outside of the main program, ...

Get ready for your aha moment: Every weekday, host Meghna Chakrabarti pierces your news bubble to expose the whole story. Getting answers to the questions that need to be asked, examining our history ...