Thi demo exemplifies how you can use the RadMenu control for RTL languages.
The control takes into consideration the direction attribute set to the control itself or any parent
HTML element. If you set the direction of the body tag (or any other parent element
that contains the control) to rtl, RadMenu reverses the item order
and aligns itself to the right side of the container.
<telerik:RadMenu ID="RadMenu1" runat="server" dir="rtl" ... />