The line's engaged <a href=" http://www.dogongroup.com/properties/agents/graham-cowburn.html ">kamagra 100mg vaikutusaika ap</a> By “lessons of history” Zhu presumably meant the July 2011 budget showdown that prompted the rating agency Standard & Poors to downgrade US debt. After that point China’s holding of US Treasurys declined significantly (see chart below). It then rose again, but has recently fallen back. Zhu seemed to be hinting today that if the US continues to engage in debt brinkmanship it’s at risk of losing its biggest creditor. That would drive up the interest it has to pay and worsen its debt situation.