On relations with the Islamic Republic of Iran, Biden holds the strong card of sanctions devised under Obama and applied under Trump. Obama offered only carrots and failed. Trump offered only stick and didn't achieve his aim of a photo-op with the top mullah, Ali Khamenei, or even Hassan Rouhani. Biden is in a stronger position than Obama or Trump because the Khomeinist regime is weaker than four years ago. Adopting the Paris Climate Accord is also not easy. Last week, signatories cheekily admitted they had not implemented it. Many Americans hope that Trump's tenure will prove to be a mere parenthesis. They don't know that Biden's term will also be a parenthesis.