> "I'm partial to Iran because a multi-lateral treaty was signed. Iran stopped nuclear enrichment. In exchange, western countries pledged to provide economic relief and stop sanctions."

Iran stopped its nuclear enrichment program, so the sanctions were wavered. Iran continued working on a ballistic missile program (capable of carrying nuclear warheads), and continued destabilizing countries throughout the middle east (through proxy terrorism) - so the sanctions came back.

In other words - temporarily halting the nuclear enrichment program alone should not excuse Iran from being held accountable.