Two young brothers are among the 35 Australian tourists caught up in the tragedy in Nepal, after a deluge of ice and rock destroyed parts of its border with China. Key points and original sources are listed below.

• Two young brothers are among the 35 Australian tourists caught up in the tragedy in Nepal, after a deluge of ice and rock destroyed parts of its border with China.S1S2

• Sydney families are fearing the worst for their loved ones unaccounted for in Nepal following the devastating flash flood.S4