Poland:
two equal horizontal bands of white (top) and red; similar
to the flags of Indonesia and Monaco which are red (top) and white

Portugal:
two vertical bands of green (hoist side, two-fifths) and
red (three-fifths) with the Portuguese coat of arms centered on the
dividing line

Puerto Rico:
five equal horizontal bands of red (top and bottom)
alternating with white; a blue isosceles triangle based on the hoist
side bears a large, white, five-pointed star in the center; design
influenced by the US flag, but based on the Cuban flag

Qatar:
maroon with a broad white serrated band (nine white points)
on the hoist side

Reunion:
the flag of France is used

Romania:
three equal vertical bands of blue (hoist side), yellow,
and red; the national coat of arms that used to be centered in the
yellow band has been removed; now similar to the flag of Chad, also
resembles the flags of Andorra and Moldova

Russia:
three equal horizontal bands of white (top), blue, and red

Rwanda:
three equal vertical bands of red (hoist side), yellow, and
green with a large black letter R centered in the yellow band; uses
the popular pan-African colors of Ethiopia; similar to the flag of
Guinea, which has a plain yellow band

Saint Helena:
blue with the flag of the UK in the upper hoist-side
quadrant and the Saint Helenian shield centered on the outer half of
the flag; the shield features a rocky coastline and three-masted
sailing ship

Saint Kitts and Nevis:
divided diagonally from the lower hoist side
by a broad black band bearing two white, five-pointed stars; the
black band is edged in yellow; the upper triangle is green, the
lower triangle is red