Earlier this week, both Germany and the United States announced they would be sending tanks to Ukraine, a change from previous policy.
The bully pulpit references an unofficial power held by the president. By speaking directly to the American people, the president wields the power to sway public opinion on a variety of issues and can use that to advance their agenda. While Biden has yet to prove he can employ the bully pulpit effectively, his predecessor utilized it frequently while in office and arguably still does today.
Of course, Trump was never taken seriously by the Democratic establishment, a miscalculation that has harmed them politically in the past.