SCMP senior Asia correspondent Maria Siow analyses the geopolitical bombshell deal signed by the Solomon Islands with Beijing for security and a possible military base. What does this mean for the US Asia-Pacific pivot, and is this Australia’s single biggest foreign policy failure? Mark Magnier in New York looks at Chinese ambassador to the US Qin Gang’s courting of conservative opinion over China’s stance on the Russian war in Ukraine, and what actually happened with US House Speaker Nancy…