UK: US President Joe Biden addresses troops at RAF Mildenhall.

The transcript highlights the enduring values and connections among troops and the special relationship between the UK and the US. It discusses upcoming diplomatic meetings with global partners and stresses the importance of cooperation to address global challenges. The need to end COVID-19 worldwide and prepare for future biological threats is emphasized, underscoring the necessity of global collaboration.

What challenges does the speaker mention that require collective action?

According to the speaker, what is necessary to tackle the pressing challenges of the century?