woocommerce add extra filed in checkout Page if selected Country is A

would like to add extra field on woocommerce checkout page - where to apply if condition if the selected country is equal to A - the checkout field should appear on checkout page

/**

* Add custom field to the checkout page

*/

add_action('woocommerce_after_order_notes', 'custom_checkout_field');

function custom_checkout_field($checkout)

{

echo '<div id="custom_checkout_field"><h2>' . __('Requried For Outside UAE') . '</h2>';

woocommerce_form_field('custom_field_name', array(

'type' => 'text',

'class' => array(

'my-field-class form-row-wide'

) ,
'label' => __('House No,Villa No,Building Name') ,

'placeholder' => __('') ,

'label' => __('Street Name') ,

'placeholder' => __('Street Name') ,

'label' => __('Landmark') ,

'placeholder' => __('Enter Nearest Landmark') ,

) ,

$checkout->get_value('custom_field_name'));

echo '</div>';

}