Meeting the investment challenge is a supplement of the new UNAIDS report Together we will end AIDS and provides additional information on domestic and international resources for AIDS. The supplement highlights the fact that domestic investments have surpassed global giving in 2011. Low- and middle-income countries invested US$ 8.6 billion in 2011. While countries are tipping the balance, international assistance still remains critical and indispensable in the short and medium term. International assistance from donor government and philanthropies has remained stable at around US$ 8.2 billion in the past few years.