President Trump's plea to Putin to 'STOP' the deadly Russian strike on Kyiv brings back memories of President Biden's weak response to Putin's nuclear threats. Negotiations to end the Ukraine war require more than a simple plea. Trump should take a page from Reagan's playbook and play hardball with Putin, using humor or pointing out a wider path to achieve peace. It's time for Trump to be firm and back up his threats with real consequences, such as increased oil sanctions or granting Ukraine immediate NATO membership.