Are global variables always initialized before any thread_local global variables?

Question

struct A
{
    A() : n(1)
    {}

    int n;
};

struct B
{
    B() : n(2)
    {}

    int n;
};

thread_local A a;
B b;

int main()
{
    return a.n;
}

adetermined to b.

My question is:

Is the C ++ standard warranty B::B()called before the call A::A()?